OpenBet Senior Software Engineer Interview Questions and Answers

Q1. What are the different sizes available for a virtual warehouse in Snowflake, and which sizes are currently being utilized in your current project?
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Q2. What are stored procedures in Snowflake, and how did you utilize them?
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Q1. How did you verify the data after transferring it from one database to another?
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Q2. What are the different types of duplicate checks that can be performed using SQL queries?
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Q1. Are you open to relocating to Hyderabad?
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Q2. What information do you have about ValueLabs?
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Q1. Architecture discussion around projects
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Q1. Caching, auth discussion in depth
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Q1. Difference between Scheduled script and Map reduce script?
Ans. 
Scheduled script runs on a predefined schedule, while Map reduce script processes large datasets in parallel.
• Scheduled script is used for automating tasks at specific times, like sending reports daily at 8am.

• Map reduce script is used for processing large datasets by splitting them into smaller chunks and processing them in parallel.

• Scheduled script is typically used for routine tasks, while Map reduce script is used fo...read more
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Q2. Types of scripts in NetSuite.
Ans. 
Types of scripts in NetSuite include SuiteScript, SuiteTalk, SuiteFlow, and SuiteBuilder.
• SuiteScript: JavaScript-based scripts for customizing NetSuite functionality.

• SuiteTalk: Web services integration for connecting NetSuite with external systems.

• SuiteFlow: Visual workflow tool for automating business processes.

• SuiteBuilder: Customization tool for modifying NetSuite forms, fields, and records.
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Q1. Node.js question were asked
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Q2. Project questions were also being asked
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Q1. General Behavioural questions
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Q2. Culture fit questions
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Q1. Explain technical challenges you have come across and how did you overcome it?
Ans. 
I faced a technical challenge while implementing a complex algorithm for real-time data processing.
• Identified the bottleneck in the algorithm by profiling the code

• Optimized the algorithm by implementing data structures and algorithms with lower time complexity

• Tested the optimized solution thoroughly to ensure correctness and performance

• Collaborated with team members to brainstorm alternative approaches
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Q2. Explain the main feature of JavaScript frameworks
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JavaScript frameworks provide pre-written code to simplify and speed up web development.
• Helps in organizing code and improving code quality

• Provides reusable components for faster development

• Offers built-in features like routing, state management, and data binding

• Examples: React, Angular, Vue
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Q1. All the questions were from SQL server.
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Q2. How to get 3rd highest salary ?
Ans. 
To get the 3rd highest salary, you can use a SQL query with the 'LIMIT' and 'OFFSET' keywords.
• Use a SQL query to select distinct salaries in descending order.

• Use the 'LIMIT' keyword to limit the results to 3.

• Use the 'OFFSET' keyword to skip the first 2 highest salaries.

• Example: SELECT DISTINCT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2;
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Q3. Inner join result of 2 table. Table one [1,1,1,1] table two [1,1,1,1,1,1]
Ans. 
The inner join of two tables with duplicate values results in a combined set of common values.
• Inner join combines rows from both tables where the key columns match

• In this case, the result would be [1,1,1,1,1,1] as all values are common in both tables
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Q4. SSIS Package creation.
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Q5. Latest project explanation
Ans. 
Developed a web application for tracking and managing project tasks
• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express

• Utilized MongoDB for database management

• Incorporated authentication and authorization features for user security
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Q1. What is difference between SQL and NoSQL
Ans. 
SQL is a relational database management system, while NoSQL is a non-relational database management system.
• SQL databases are table-based, NoSQL databases are document, key-value, graph, or wide-column stores

• SQL databases use structured query language for defining and manipulating data, NoSQL databases use different query languages

• SQL databases are vertically scalable, NoSQL databases are horizontally scalable

• SQL databa...read more
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Q2. Why is NoSQL better then SQL
Ans. 
NoSQL is better for handling unstructured data, providing scalability and flexibility.
• NoSQL databases are better suited for handling unstructured data like social media posts, user-generated content, and IoT data.

• NoSQL databases provide better scalability as they can easily distribute data across multiple servers, allowing for horizontal scaling.

• NoSQL databases offer more flexibility in terms of data model, allowing fo...read more
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Q3. Explain the data pipeline you have worked on.
Ans. 
Designed and implemented a real-time data pipeline for processing and analyzing user behavior data.
• Used Apache Kafka for real-time data streaming

• Utilized Apache Spark for data processing and analysis

• Implemented data transformations and aggregations using Scala

• Stored processed data in a data warehouse like Amazon Redshift

• Built monitoring and alerting systems to ensure data pipeline reliability
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Q4. Managing team
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Q5. What will you do if you have conflict with your manager.
Ans. 
I would address the conflict directly and professionally, seeking to understand the root cause and find a mutually beneficial solution.
• Schedule a private meeting with the manager to discuss the conflict

• Listen actively to the manager's perspective and express your own calmly

• Seek to find common ground and propose potential solutions

• If necessary, involve HR or a mediator to help resolve the conflict
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Q6. What do you love to do when you are free
Ans. 
I love to spend my free time hiking, reading, and trying out new recipes in the kitchen.
• Hiking in the mountains or local trails

• Reading fiction and non-fiction books

• Experimenting with new recipes and cooking techniques
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Q1. Salary expectations
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Q2. Family background
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Q1. Invert bits of a number
Ans. 
Invert the bits of a given number
• Use bitwise XOR operator (^) with 1 to flip each bit

• Repeat the process for all bits in the number

• Return the inverted number
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Q2. How do you support backward compatibility whiel designing a system
Ans. 
Backward compatibility can be supported by using versioning, deprecation strategies, and maintaining clear communication with users.
• Use versioning to clearly distinguish between different versions of the system

• Implement deprecation strategies to phase out old features gradually

• Maintain clear communication with users about upcoming changes and provide migration paths

• Consider using compatibility layers or adapters to bri...read more
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MCQ type questions related to Front end, Back end and involved few coding questions in the MCQ format

Q1. How would you debug an application to solve a production defect that was raised?
Ans. 
I would start by reproducing the issue, analyzing logs, checking code changes, and using debugging tools.
• Reproduce the issue to understand the exact scenario where the defect occurs.

• Analyze logs to identify any error messages or warnings related to the defect.

• Check recent code changes to see if any recent modifications could have caused the defect.

• Use debugging tools like breakpoints, logging, and profiling to trace th...read more
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Q2. What would you do if a defect can't be fixed?
Ans. 
I would analyze the impact of the defect and explore alternative solutions.
• Analyze the impact of the defect on the overall system functionality

• Discuss with the team to brainstorm alternative solutions

• Consider workarounds or temporary fixes while a permanent solution is being developed
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Q3. How would you implement breaking changes in the application?
Ans. 
Breaking changes can be implemented by following a structured process to minimize impact on users.
• Communicate the changes to stakeholders in advance

• Provide detailed documentation on the changes and how to adapt to them

• Implement versioning to allow users to choose when to adopt the changes

• Use feature flags to gradually roll out the changes and monitor impact

• Run thorough testing to ensure the changes do not introduce new
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